lotus/chain/stmgr/forks.go

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package stmgr
import (
"context"
amt "github.com/filecoin-project/go-amt-ipld/v2"
"github.com/filecoin-project/lotus/build"
"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/state"
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"github.com/ipfs/go-cid"
hamt "github.com/ipfs/go-hamt-ipld"
blockstore "github.com/ipfs/go-ipfs-blockstore"
cbg "github.com/whyrusleeping/cbor-gen"
"golang.org/x/xerrors"
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)
func (sm *StateManager) handleStateForks(ctx context.Context, pstate cid.Cid, height, parentH uint64) (_ cid.Cid, err error) {
for i := parentH; i < height; i++ {
switch i {
case build.ForkBlizzardHeight:
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log.Warnw("Executing blizzard fork logic", "height", i)
npstate, err := fixBlizzardAMTBug(ctx, sm, pstate)
if err != nil {
return cid.Undef, xerrors.Errorf("blizzard bug fix failed: %w", err)
}
return npstate, nil
case build.ForkFrigidHeight:
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log.Warnw("Executing frigid fork logic", "height", i)
npstate, err := fixBlizzardAMTBug(ctx, sm, pstate)
if err != nil {
return cid.Undef, xerrors.Errorf("frigid bug fix failed: %w", err)
}
return npstate, nil
}
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}
return pstate, nil
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}
/*
1) Iterate through each miner in the chain:
1.1) Fixup their sector set and proving set
1.2) Change their code cid to point to the new miner actor code
*/
func fixBlizzardAMTBug(ctx context.Context, sm *StateManager, pstate cid.Cid) (cid.Cid, error) {
cst := hamt.CSTFromBstore(sm.cs.Blockstore())
st, err := state.LoadStateTree(cst, pstate)
if err != nil {
return cid.Undef, err
}
spa, err := st.GetActor(actors.StoragePowerAddress)
if err != nil {
return cid.Undef, xerrors.Errorf("failed to get storage power actor: %w", err)
}
var spast actors.StoragePowerState
if err := cst.Get(ctx, spa.Head, &spast); err != nil {
return cid.Undef, err
}
miners, err := actors.MinerSetList(ctx, cst, spast.Miners)
if err != nil {
return cid.Undef, err
}
for _, m := range miners {
mact, err := st.GetActor(m)
if err != nil {
return cid.Undef, xerrors.Errorf("getting miner actor to fix: %w", err)
}
nhead, err := fixMiner(ctx, cst, sm.cs.Blockstore(), mact.Head)
if err != nil {
return cid.Undef, xerrors.Errorf("fixing miner: %w", err)
}
if nhead != mact.Head {
log.Warnf("Miner %s had changes", m)
}
mact.Head = nhead
mact.Code = actors.StorageMiner2CodeCid
if err := st.SetActor(m, mact); err != nil {
return cid.Undef, err
}
}
return st.Flush()
}
func fixMiner(ctx context.Context, cst *hamt.CborIpldStore, bs blockstore.Blockstore, mscid cid.Cid) (cid.Cid, error) {
var mstate actors.StorageMinerActorState
if err := cst.Get(ctx, mscid, &mstate); err != nil {
return cid.Undef, xerrors.Errorf("failed to load miner actor state: %w", err)
}
amts := amt.WrapBlockstore(bs)
nsectors, err := amtFsck(amts, mstate.Sectors)
if err != nil {
return cid.Undef, xerrors.Errorf("error fsck'ing sector set: %w", err)
}
mstate.Sectors = nsectors
nproving, err := amtFsck(amts, mstate.ProvingSet)
if err != nil {
return cid.Undef, xerrors.Errorf("error fsck'ing proving set: %w", err)
}
mstate.ProvingSet = nproving
nmcid, err := cst.Put(ctx, &mstate)
if err != nil {
return cid.Undef, xerrors.Errorf("failed to put modified miner state: %w", err)
}
return nmcid, nil
}
func amtFsck(s amt.Blocks, ss cid.Cid) (cid.Cid, error) {
a, err := amt.LoadAMT(s, ss)
if err != nil {
return cid.Undef, xerrors.Errorf("could not load AMT: %w", a)
}
b := amt.NewAMT(s)
err = a.ForEach(func(id uint64, data *cbg.Deferred) error {
err := b.Set(id, data)
if err != nil {
return xerrors.Errorf("could not copy at idx (%d): %w", id, err)
}
return nil
})
if err != nil {
return cid.Undef, xerrors.Errorf("could not copy: %w", err)
}
nss, err := b.Flush()
if err != nil {
return cid.Undef, xerrors.Errorf("could not flush: %w", err)
}
return nss, nil
}